Valve.



H. E. LA BOUR AND G. A. GHASSBY, JR.

VALVE.

APPLICATION FILED MAR. I3. I918 LSQQEWO Patented May 6, 1919.

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Y'E. TA POUR, OF CHICAGO HEIGHTS, AND GEORGE A. GRASSBY, JR, 015 FERN- WOOD, ILLINOIS, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, T0 CHEMICAL EQUIPMENT COMPANY, OF CHICAGO HEIGHTS, ILLINOIS, 1i CORPORATION OF HALT- Hills.

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Specification of Letters Patent.

VALVE.

Patented May 6, acre.

Application filed. March 13, 1918. Serial No. 222,106.

To all whom it may concern Be itknown that'we, HARRY E. LA Bonn and GEORGE A. GRAssBr, Jr, citizens of the United States, residing at Chicago Hei hts, Cook county, Illinois, and Fernwood, ook county, Illinois, respectively, have invented a certain new and useful Improvement in Valves, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming apart of thisspecification.

Our invention relates to valves and more particularly to valves employed in systems for conveying acids or other corrosive liquids or fluids.

Due-to the nature of the fluids, it is necessary toconstruct valves for such service in whole or in part of non-corridible material. Particularly the interior parts of the valve should be so made of material not afl'ected by the fluid conveyed.

Dificulty has heretofore been encountered.

in constructing a valve for such service which will be strong enough to stand up in usage without making the same excessively heavy or expensive. Even under the best of conditions the life of valves for this service, as heretofore constructed, has been very short, and mere increase in size or weight is relatively ineflectual.

The object of our invention is to provide an improved valve structure which combines strength and durability with simplicity.

Tn thepreferred form of our invention weform all the interior parts of the valve of relatively non-corrodible material (as for instance lead when conveying sulfuric acid) and provide the valve with a removable valve seat member which can be readily replaced without disconnecting. the valve body from the adjacent parts of the system or Without removing the valve plug member.

.All the parts of the valve which are ex posed are finished smooth and may be constructed of non-corrodible material. The operating threads are all concealed and are protected. The yoke and 'stuifin'g box are of novel construction to secure durability and accessibility. The valve plug and body are arranged to permit of packing the stuflinr box for the stem under pressure.

' in order to teach those skilled the art how to construct and use one embodiment of our invention reference is now made to the accompanying drawings, which illustrate the preferred embodiment of our invention and to the following detailed specification relating to the same.

F igure'l is a longitudinal axial'section of the preferred form of our invention; and

Fig. 2 is a fragmentary elevational view taken from aboveand at right angles to the axis of the operating stem.

Fig. 3 is a fragmentary sectional view illustrating the manner of attaching the valve stem to the operating wheel or handle;

Fig. 4 is a sectional view of the flanged. washer;

gig. 5 is a plan View of a slotted washer; an

Fig. 6 is a section taken on the line 66 of Fig. 3. I

The valve body comprises two sections 1 and 2 which have the end flanges 3 and 4 respectively for attaching to the adjacent clamped the seat member 9. The seat mem ber 9 comprises a flat slab or disk of noncorrodible metal with a straight axial hole 10 forming the valve port. The edges of this port form the seat which cooperates with the plug 11.

The body sections 1 and 2, the seat member 9 and the plug member 11 are in this case formed of lead-for resisting the action of the fluids conveyed.

The bodysection 2 is formed with an enlargement 12 which is recessed to provide lodgment of the plug member 11.

Theenlargement 12 is bored out in alinement with the axis of the valve port 10 and at right angles to the plane of the flange 8 to form a stufing box 13 in which is lodged the packing 14 for forming a tight joint with the valve stem 6 A yoke or bridge 15 is bolted to the enlargement 12 and provides the required support for operating the stem 6. This yoke is formed with a pair of hollow posts 16 and a straight transverse bar 17 which is preferably but not necessarily formed integral with the posts 16. The enlarged por tion 12 of the body section 2 is provided with lateral recesses or pockets 18. These pockets are made large enough to receive the nuts 19 into which are threaded the studs 20.

- These studs project through the hollow posts 16 and are engaged by the nuts 21 for holding the yoke 15 in place. The lower endsof the posts 16 are provided with fiat pedestals 22 which rest upon the flat top surface 23 of the enlargement 12. The recesses 18 may be filled with lead to seal the Same and to hold the lower ends of the bolts 20 and the nuts 19 against turning. In that case the bolts 20 and nuts 19 are preferably locked together by cotter pins or the like. This particular manner of sealing the pockets 18 and of holding the lower end of the bolts 20 may be varied.

The crossbar 17 of the yoke 15 has a hollow cylindrical boss 24 axially in line with the valve port 10. The upper outer cylindrical surface of this boss 24 is threaded as shown at 25 to cooperate with the internal threads on the interior of the hollow boss 26 of the wheel or handle '27. The upper end of the valve stem is provided with a shoulder 28 and a reduced portion 29 passing through the web 30 of the wheel 27. The reduced portion 29 of the stem 6 projects through the web 30 of the hand wheel 27. A groove 45 is formed in the upper end of the reduced portion. This groove is engaged by the slotted washer 32 which lies under the flange 46 of the flanged washer or collar 31 which in turn is held in place by the cotter pin 33. Thus a symmetrical head is formed on the upper end of the stem 6 which head is readily removable. The stem 6 is thus held against axial displacement in the web 30. The wheel is thus free to be turned on the threads 25 to move the valve stem 6 in or out.

The relatively large open space between the yoke 15 and the enlargement 12 provides convenient room for packing the stufling box 13.

The stem 6 may be made of a non-corrodi ble material but for the purpose of imparting strength we construct the stem 6 preferably of a. metal of relatively great strength and coat or cover the lower end of the stem where it passes through the stufiing box or into the interior of the valve body with a sleeve 34 of vnon-corrodible non-metallic material.

The stuffing box 13 has a cooperating gland 35 controlled by the sleeve or gland follower 36. This gland follower 36 has an upper enlarged threaded portion 37 which threads into the interior threads 38 in the bore of the boss 24. The lower end of the sleeve 36 has a head 39 which may be of capstan or hexagon or other suitable formation to permit it to be readily manipulated for packing or adjusting the stufiing box 13.

The valve plug 11 is preferably cast upon or formed integral with the stem 6 and comprises an outer conical face 40 for co'o'perat ing with the rim of the valve port 10. The rear part of the valve plug 11 is provided with a conical face 41 of reduced diameter adapted to engage a seat 42 in'the recess 43 and about the stem 6. Thus when the valve is in fully open position the face 41 of the plugll engages with the seat 42 and permits the box 13 to be packed while the valve is under pressure. The seat member 9 being symmetrical and having a straight bore 10 is reversible when the edges become worn away from use. The member maybe reversed or bored out to a larger diameter to form a tight closure. It is to be understood that the plug 11 does not rotate with respect to the seat 9. The friction of the stuffing box holds the stem 6 against turning.

We do not intend to be limited to the precise details of construction shown and described.

We claim:

1. In avalve, a body comprising two compl mentary sections divided on a plane lying at an acute angle to the axis of the sections, one of said sections having an enlargement formed integral therewith, said enlargement having a bore therein for a valve stem, said enlargement having a face at right angles to said bore, a yoke clamped on said face on each side of said bore, said enlargement be ing counterbored to provide a stuffing box, a

stem passing through said bore and said stufling box, a gland for the stufiing box and I a gland follower adjustably mounted on said yoke, said stem being adjustably secured to said yoke.

2. In a valve for corrosive liquids, a body comprising two complementary sections ofsoft metal, divided on a plane lying at an acute angle to the axis of said sections, a seat member comprising a flat. disk of substantially uniform thickness having a straight circular bore therethrough, said sections having means for clamping said disk between them and a conical valve plug for cooperating with the rim of said bore.

3. In a valve for corrosive fluids, a valve member comprising a flat circular disk of non-corrodible soft materialpsaid disk having a straight circular axial bore and a conical valve plug of non-corrodible soft material carried by a non-rotatable valve stem cooperating with the rim of the bore to form a tight closure.

4. In a valve for corrosive fluid. a valve member comprising a flat disk of soft metal.

Lsoaaev said disk having a circular bore providing a similar valve seat at each face of the disk, whereby the disk is reversible for use, and a non-rotatable valve for cooperation with said soft valve disk to form 'a tight closure. 5. In a valve for use in a pipe line, a valve body comprising two complementary .sections, meeting on a plane at 45 to the axes thereof, a flat valve plate of substantially uniform thickness clamped between the adjacent ends of said sections, and removable edgewise from operative position without disturbing said valve or disconnecting the pipe line, a conical valve mounted in one section, and said plate provided with a circular bore providing a seat at each face thereof for coiiperation with said valve plug,

and whereby the plate can be reversed for use. j

6. In a valve for corrosive fluids, a body,

a plug and a seat member of non-corrodible I move the plug toward or from the seat.

' seatmember, a stem for the plug projecting 7 In a valve for corrosive fluids, a body, a plug and a seat member of non-corrodible material, said body having an enlarged portion comprising a stuffing box, a yoke mem-' ber clamped on said enlarged portion, a valve stem projecting through the stuffing box into the interior of the body, a gland and a gland follower having threaded engagementwith the yoke, said gland and follower covering the portion of the stem betweenthe yoke and stuffing box, and means for moving the stem axially through said stufling box to move the plug toward or from the seat, said stem having a sleeve of non-corrodible material where it passes through the stuffing box, said plug being movable without rotation with respect to said seat.

8. Ina valve, a body having a seat member and having an enlargement extending at substantially right angles to the seat member, said enlargement being bored to provide a stufling box, a valve plug for the through the stufiing box, a yoke having a pair of posts secured to said enlargement, said yoke having a hollow boss on the upper end of the same, saidboss being interiorly threaded, a gland, and a follower, said follower comprising a sleeve having a threaded head lying within the threaded boss and having means on the lower end of the sleeve for rotating the same, said enlargement having an interior seat adapted to be engaged by said plug to providea closure to permit packing of the stuffing box while the valve is under pressure. v 9. In a valve, a stuffing box, a stem passing through the stufling box, a yoke over the stuiiing box, said yoke having a hollow boss, a gland on the stem, a follower for the gland on the stem, said follower comprising a sleeve having a head threaded into.

the boss, and a hand wheel secured to the stem and rotatable with respect to the stem, said handwheel having a hollowhub threaded on the outside of the boss.

r 10. In a valve, a yoke havin a hollow boss threaded. outside and insi e', a valve stem passing axially through the boss, a gland on the stem, a follower having a threaded head engaging the threads on the inside of the'boss, said follower forming a guide for the stem and a hand wheel having a hub threaded over the outside of the boss,

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said hand wheel being secured to the stem,

the threads on the boss being normally covered by the threaded hub, said valve having a stuffing box cooperating with said gland.

11. In a valve, a yoke, a stem guided through said yoke, said yoke having a tubuar boss, said boss having an enlarged threaded head at its outer end and a hand wheel secured to the stem, said wheel having a hollow hub threaded over said head and inclosing the same.-

12. In a valve for corrosive fluids, a valve member comprising a fiat circular disk of straight circular axial bore, a non-rotatable conical valve plug of non-corrodible-material, cooperating with the rim of the bore to form a tight closure, and meansjfor moving the valve longitudinally without c0m pelling rotation thereof.

13. In a valve, a yoke havin a hollow boss threaded outside and insi e, a valve stem passing axially through the boss, a gland on the stem, a follower having a threaded head engaging the threads on the inside of the boss, a hand wheel having hub threaded over the outsideiof the boss, said hand wheel being secured to the stem, the threads on the boss being normally covered by the threaded hub, and said valve hiivigg a stufling box cooperating with said g an 14. In a valve for corrosive fluids, a valve member comprising a flat circular disk of non-corrodible material, said disk having valve from and toward the disk for opening and closing the valve.

15. In a valve for use in 'non-corrodible material, said disk having a I a pipe line for 18o corrosive fluids, a valve body comprising two complementary sections meeting on a plane at 45 to the axes thereof, a flat softmetal valve plate of substantially uniform thickness clamped between said sections and removable edgewise from its operative position without disturbing the said sections or the pipe line, said plate having a circular axial bore providing similar valve seats at each face thereof, whereby the said plate is 10 reversiblefor use, and a non-rotatable valve plug mounted in one of said sections for cooperation with the rim of said bore for making a tight joint.

In witness whereof, we hereunto subscribe 15 our names this 4th day of March A. D. 1918.

HARRY E. LA BOUR. GEO. A. GRASSBY, JR. 

